How many mL of water are needed to prepare a 3:200 foot bath solution if you use 0.4 g of copper sulfate? *​

Iwant to know what 3g+5h+4g-2h is my teacher is too selfish to tell us

Aman is 6 feet 3 inches tall. the top of his shadow touches a fire hydrant that is 13 feet 6 inches away. what is the angle of elevation from the base of the fire hydrant to the top of the man's head?

State if the two triangles are congruent. if they are, state how you know?